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Well, I messed up. I have a Scott Foil R2 (integrated cables) and I was feeding a shift cable in backwards through the chainstay to get it to pop out near the bottom bracket where I would tape it to the knew shift cable and pull it back through.

However, I thought I had more line than I really did and ended up pulling it (pretty hard) to the point where the cylindrical head was stuck about an inch and a half in. I can't get much tension in the line to push it back out because the chainstay is so long that the cable folds in on itself before the cable head moves at all.

I've tried using a really small amount of contact adhesive to stick an allen wrench to it but that failed (I'm really hoping the adhesive didn't bulge out and seal in the cable). My next thought it using really strong epoxy (JB Weld) to stick a small cable to it and pulling it out - at this point I'm sure it's pretty well lodged in there.

The smart thing to do would have been to use cable housing and put the opposite end of the shift cable through that and thread it through to where the wire is stuck. There would have been more than enough force there to push it back through. Of course I didn't think of that until after I'd tried contact adhesive and lodged it further up the tube. Really really hoping I didn't bond it to the frame.

At this point a dental pick wouldn't work either, I filled the hole with water and nothing goes through so it's a pretty tight seal...

put a bit of the glue on bit of metal foil, let it dry, see if white spirit dissolves it, for contact adhesive o think it will, if it does then put a few drops onto the stuck head let it seep in (it's also slightly lubricating until it evaporates) for 15-20 minutes, re-applying if it dries, then try using the outer to shove it out

Could I solder a wire or something to the end of the shift cable? I was thinking of going out and getting some JB Weld to bond a small allen key to it, but that again runs the risk of bonding it to the frame as well and that'd be game over. I'll head out and see if I can find a long enough tipped soldering iron here locally and give that a shot I hear WB-40 also helps to break down contact adhesive? I'll either try that or some white spirit if I can find it

That's an awesome idea, my concern would be adding tension to the cable effectively lodging it deeper in the frame though? I'm pretty sure that the super glue is pretty well set up locking in the shift cable... I have access to liquid nitrogen and I'm thinking about freezing the super glue to get it to crack?

I now know that carbon fiber has a negative thermal expansion coefficient - so heating it would make it shrink (which would be ideal as it would make the hole minutely bigger, loosen up the superglue) but might make the steel expand to a greater degree??

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